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(No Modelfl S. W. KIMBLE.

APPARATUS FOR ATOMIZING SOLID SUBSTANCES. No. 410,247. Patented Spt. 3, 1889.

WATM Aw: A'MMA UNITED STATES PATENT ()FFICE.

SMITHVV. KIMBLE, OF DENVER, COLORADO, ASSIGNOR OF TWO-TI-IIRI)S TO CHARLES II. ABBOTT AND SIDNEY MCCLANATHAN, OF SAME PLACE.

APPARATUS FOR ATOMIZING SOLID SUBSTANCES.

SPECIFICATION forming part of Letters Patent No. 410,247, dated September 3, 1889. Application filed April 16, 1389. Serial No. 307,294- (No model.)

To all whom, it may concern: Be it known that I, SMITH W. KIMBLE, a citizen of the United States of America, residing at Denver, in the county of Arapahoe 5 and State of Colorado, have invented certain new and useful Improvements in Apparatus for Atomizing Solid Substances, of which the following is a specification, reference being had therein to the accompanying drawings. My invention relates to a new and improved form and combination of a pulverizer or dis- 3 integrator; and its objects are to produce a pulverizing and reducing apparatus of sim ple compact construction with comparatively I 5 few but durableparts easily operated and controlled and adapted to reduce speedily and thoroughly the material fed thereinto, a reducer especially well adapted for the reduction and comminution of such materials as the various spars, mica, and other aluminous compounds, whose reduction has always been attended with great difficulty; towhich ends the invention consists in the features, constructions, and combinations more particu- 2 5 larly hereinafter set forth and claimed.

In the drawings is illustrated an embodiment of my invention, wherein- Figure l-is a top or plan View of my ini proved pulverizer with the cover removed 0 therefrom; Fig. 2, an end view or elevation thereof with apart of an end broken away to show the interior.

In the figures, the reference-numerals 1 1 indicate the main framing for supporting the operative parts and constructed or built up in any suitable or desired form. By such main framing is supported the casing for inclosing the reducing apparatus proper, such casing consisting of the lower portion 2 and a similar upper portion 3, hinged thereto or detachably connected thereto, the parts being provided with any suitable devices by which they may be securely fastened together. This casing is in substance somewhat of the form exteriorly and in transverse or cross section of a figure 8 laid horizontally upon its sidethat is, it is composed, in effect, of two hollow cylinders, from each of which a portion of its periphery-say a quarter-has been cut away longitudinally, the two being then united along the line of this opening. Upon the main framing are secured the boxes 4, furnishing the bearings for the shafts 5 6, which carry at both ends the pulleys '7, by which motion maybe communicated to the shafts. On these shafts are arranged to project therefrom the heaters or fingers 8, there being an equal number of such heaters or fingers on each shaft. Preferably these fingers .are constructed in pairs, two projecting at diamet- 6o rically-opposite points from a hub 9, such hub being apertured that it may be slid into position upon a shaft. Preferably they should be made of some material of great tensile 'strength, not easily worn away or abraded, and be tapered somewhat 011 their exterior faces or edges, as shown at 17in Fig. 2, while one of the sides is a plane surface, the other being somewhat inclined or tapering, as'seen at 18. They are arranged spirally on the shafts, but with a different pitch, those on one shaft (herein the shaft 6) beingplaced thereon at such a pitch that they make, say, ina length of about three feet a half-turn of a screw-thread thereon, while on the other shaft 5 the pitch is such that they make a complete turn thereon. The location of the shafts 5 6 relatively to each other is such that the fingers or boaters projecting from one shaft reach comparatively near the other shaft in rotating, the fingers on the one passing through the interfinger spaces on the other. At 10 is situated the inlet orhopper for the material to be acted on, while at 11 is the outlet therefor, a pipe 12 being connected to the latter at one end, while at its other end it is connected to any suitable exhaust apparatus 13, from which a pipe 14 extends to the point where it is desired to deliver the pulverized material. 9 a

In practice belts should be applied to the pulleys at both ends of the shafts, that they may be driven with great speed and with uniformity of power, and both shafts should be geared to revolve in the same direction, and so that the spirally-arranged beaters or fingers on shaft 5 tend to carry the material from the inlet to the outlet. As the shafts are rotated in the same direction, it follows that the fin gers or beaters which at any one time are in the spaces 19 and 20 between the shafts and theouter shell 01' case travel in the same direc- ,by the beaters or fingers.

tion, while those in the space 21 between the shafts travel in opposite directions, those on one shaft passing between and in a direction the reverse of the direction of those on the other shaft. This, with the unequal spiral arrangements, cause the material to be subjected to a variety of conflicting and opposing influences. From the inlet 10 it passes into the space 21, wherein the spirally-arranged beaters or fingers on shaft 5 tend to force it rapidly toward the outlet 11, while at the same time those on shaft 6,having only half the pitch of those on shaft 5, tend to, force it at half such speed in the contrary direction, at the same time those on shaft 5 are forcing the material downwardly and those on shaft 6 are forcing it upwardly, one set operating to carry the material in two directions, or in a direction which is the resultant of such two, while the other set is acting thereon in exactly the reverse way, while at the same time the material is subject to the action of the blast pulling it from inlet to outlet. The shell or casing, it will be noted, is of 'a contour like two intersecting circles, the intersecting circles described by the beaters or fingers on the two shafts 5 (i, and is of a size just sufficient to permit the free rotation of such beaters or fingers within it, the dire'ction 'of rotation of the two sets thereof in the intermediate space being designated by the Then the set to the left arrows in Fig. 2. I or on shaft 5 tends to carry the material downward to the left and then upward to the right; but when it comes again within the overlapping of the circles described by the heaters or fingers it tends to fall, Only, however, to meet the other set of blades, beaters, or fingers, tending to throw it in the opposite direction. Thus the material in the intershaft space 21 is, in effect, in a whirlwind, acted on by all these opposing in fluences, and this variety of such influences has undoubte'dly as much, if not more, to do with the complete reduction to atoms of the material treated as has the mere physical beating, rubbing, and impingement of such material When run at a high speed-say five thousand revolutions per ininutethe work of reduction is very complete, thorough, and speedy. Even sheets of mica fed in at the inlet 10 appear as an impalpable powder at the outlet after an interval of time so brief as to be scarcely perceptible, the operation onany one piece being almost, if not quite, instantaneous.

The casing may be made of any suitable metal, and preferably the two halves should be formed or fitted to make a tight joint when brought together.

Having thus describ 2d my invention, what I claim is 1. A pulverizer consisting of an inclosing shell or casing, two shafts mounted to rotate therein, and a series of fingers or beaters on and projecting from such shafts and arranged thereon spirally, the pitch of the spiral on one shaft being different from that on the other shaft, and the fingers or beaters on one shaft passing on rotation through the interfinger spaces of those on the other shaft, substantially as set forth.

2. The combination of the inclosingcase or shell, two shafts mounted to rotate therein parallel toea ch other, and the fingers or beaters 8, constructed in pairs projecting from a hub 9 and inclinedor tapered on their opposite edges 17 and on their faces 18, said fingers or beaters being arranged spirally on the shafts, the pitch 'of the spiral on one shaft being twice that of the spiral on the other shaft, substantially as set forth. 7 p y p 3. The combination of the shell creasing made in two parts pivotally or 'detachably secured together and having inlet and outlet openings at opposite end's,;two shafts mounted to revolve within the shell orcasing and parallel to each other, the series of beaters, or fingers arranged spirally thereon, the pitch of the spiral'on one shaft being differentfrom that on the other, and an exhaust apparatus connected to the outlet, substantially as 'set forth. k c a I 4. The combination of the shell or casing formed of the parts 2 3-, the shafts arranged to rotate therein and parallel to each other, the fingers or beatersS, formed in pairs. and projecting each pair from a hub 9 and arranged spirally on the shafts, the pitch of the spiral on one shaft being different from that on the other, the exhaust 13, and pipe 12, connecting such fan to the outlet 11, substantially as set forth.

SMITH w. KiMnLE.

itnesses:

L. F. WILBER, BR'INToN GREGORY. 

